If the continental glaciers covering Greenland and Antarctica melted completely,the sea level would rise about（ B ）A.6m B.60m C.600m D.6000m
如果格陵兰岛和南极洲所覆盖的大陆冰川完全融解,那么海平面会上升大约多少米呢?
This is a choice question.这是一道选择题.
Then there are three questions to judge true or false.有三道判断真假的题目.
1.Valley glaciers from when huge portions of Earth's surface are covered with ice.(__F____)
在地球表面的大部分还覆盖着冰的时候,谷冰川形成了.
2.The pressure of a thick mass of snow causes the underlying snow to freeze.(__T____)
大量厚的雪造成的压力使得底层雪结冰.
3.Glaciers usually more faster over steep slope than over gentle slope.(__T____)
比起在平缓坡,冰川通常在陡坡上移动更快.
答案：选择题B； 真假题 假 真 真.
Answer:Choice B; False True True.